Display device

Abstract

Provided is a display device, wherein the display device includes a backplane, a control unit on the backplane, a light source between the backplane and the control unit, a transparent electrode connected to the control unit, and a shape control layer on the transparent electrode. The control unit is configured to control a voltage of the transparent electrode. The shape control layer includes an electro-active polymer (EAP).

What is claimed is: 
     
         1 . A display device comprising:
 a backplane;   a control unit on the backplane;   a light source between the backplane and the control unit;   a transparent electrode connected to the control unit; and   a shape control layer on the transparent electrode,   wherein:   the control unit is configured to control a voltage of the transparent electrode; and   the shape control layer includes an electro-active polymer (EAP).   
     
     
         2 . The display device of  claim 1 , wherein the electro-active polymer comprises one or more selected from the group consisting of a conductive polymer, an ionic polymer, Nafion, and Flemion. 
     
     
         3 . The display device of  claim 2 , wherein the conductive polymer comprises one or more selected from the group consisting of polypyrrole, polyaniline, polythiophene, and poly-sodium allyloxy hydroxypropyl sulfonate. 
     
     
         4 . The display device of  claim 2 , wherein the ionic polymer comprises one or more selected from the group consisting of a carbon nanotube, a fluorinated polymer, and a sulfonated polymer. 
     
     
         5 . The display device of  claim 4 , wherein the fluorinated polymer comprises a fluorinated acrylic copolymer. 
     
     
         6 . The display device of  claim 4 , wherein the sulfonated polymer comprises one or more selected from the group consisting sulfonated polystyrene, sulfonated poly (vinyl alcohol), sulfonated poly (arylene ether sulfone), sulfonated ethylene vinyl alcohol copolymer, and sulfonated poly (styrene-b-ethylene-co-butylene-b-styrene). 
     
     
         7 . The display device of  claim 1 , wherein the absolute value of the half beam angle of the light source is 5° or less. 
     
     
         8 . The display device of  claim 1 , further comprising:
 a first electrode on the substrate; and   a second electrode on the light source,   wherein the first electrode and the second electrode are spaced apart from each other with the light source interposed therebetween.   
     
     
         9 . The display device of  claim 8 , wherein the first electrode comprises a transparent conductive material and an electrode material,
 wherein:   the transparent conductive material includes one or more selected from the group consisting of a transition metal oxide, a metal nitride, indium tin oxide, and aluminum-doped zinc oxide; and   the electrode material includes one or more selected from the group consisting of silver (Ag), aluminum (Al), molybdenum (Mo), cobalt (Co), copper (Cu), gold (Au), platinum (Pt), tungsten (W), chromium (Cr), magnesium (Mg), and lithium (Li).   
     
     
         10 . A display device comprising:
 a backplane; and   a plurality of pixels on the backplane,   wherein the pixels each include:   a control unit on the backplane;   a light source between the backplane and the control unit;   a transparent electrode connected to the control unit; and   a shape control layer on the transparent electrode,   wherein:   the control unit is configured to control a voltage of the transparent electrode; and   the shape control layer includes an electro-active polymer (EAP).   
     
     
         11 . The display device of  claim 10 , wherein the pixels each comprise:
 a first sub-pixel in which the light source is red light;   a second sub-pixel in which the light source is green light; and   a third sub-pixel in which the light source is blue light source.   
     
     
         12 . The display device of  claim 11 , wherein shape control layers of the first sub-pixel, the second sub-pixel, and the third sub-pixel are spaced apart from each other. 
     
     
         13 . The display device of  claim 11 , wherein the shape control layers of the first sub-pixel, the second sub-pixel, and the third sub-pixel are in contact with each other. 
     
     
         14 . The display device of  claim 10 , wherein in each of the pixels, the transparent electrode is provided in plurality and spaced apart from each other. 
     
     
         15 . The display device of  claim 10 , wherein in each of the pixels, the control unit is provided in plurality and spaced apart from each other. 
     
     
         16 . The display device of  claim 10 , further comprising a partition wall on the backplane, wherein the shape control layer of each of the pixels are spaced apart from each other with the partition wall therebetween. 
     
     
         17 . A display device comprising:
 a backplane;   a partition wall on the backplane; and   a plurality of pixels on the backplane, wherein the pixels each include a first sub-pixel, a second sub-pixel, and a third sub-pixel, wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel each includes:   a control unit on the backplane;   a transparent electrode connected to the control unit; and   a shape control layer on the transparent electrode,   wherein:   the first sub-pixel further includes a red light source between the backplane and the control unit;   the second sub-pixel further includes a green light source between the backplane and the control unit; and   the third sub-pixel further includes a blue light source between the backplane and the control unit,   wherein:   the control unit is configured to control a voltage of the transparent electrode; and   the shape control layer includes an electro-active polymer (EAP).   
     
     
         18 . The display device of  claim 17 , wherein the shape control layers of the first, second, and third sub-pixels are spaced apart from each other with the partition wall therebetween. 
     
     
         19 . The display device of  claim 17 , wherein the number of the transparent electrodes included in each of the first, second, and third sub-pixels are two or more. 
     
     
         20 . The display device of  claim 17 , wherein the number of the control units included in each of the first, second, and third sub-pixels are two or more.